264 



Clark, Birds of Margarita Island. 



TAu 

 LJuI 



39. Myiarchus tyrannulus {Muller). Black-billed Petchary. — 

 Common everywhere on the island. 



40. Sublegatus arenarum (Salvin). Venezuelan Flycatcher. — 

 Common, except in the mountains. Two specimens from the island have 

 wing measurements 65 mm. for a ? , and 66 mm. for a $ . Six specimens 

 from Panama have the following measurements for the wing : $ 71 mm., 

 (J 70, 69, 72, 73, 71 mm. The tail measurements of both the Panama and 

 Margaritan examples are identical, and the color is the same. 



41. Thamnophilus doliatus {Littii.). Barred Ant Shrike. — Com- 

 mon at all points on the island. One of its notes is much like the caw of 

 our common Crow [Corvus americanus). 



42. Formicivora intermedia {Cad.). Intermediate Ant Wren. — 

 Common about El Valle, and along the bases of the hills, in the scrub. 



43. Dendroplex longirostris Richmond. Margaritan Creeper. — 

 Abundant at all points on the island. They are oftenest found, however, 

 about the post-cactus. Their crj is much like that of the Belted King- 

 fisher (Ceryle alcyon) but harsher, and more grating. 



44. Synallaxis albescens nesiotis ^ new subspecies. 

 Margaritan Spine-tail. 



Common in the scrub about El Valle. 



Type. — Male adult; No. 2723, collection of E. A. and O- Bangs. 



The underparts can be closely matched by specimens from the main- 

 land, but the upperside is paler and more gray, with the patch on the 

 head, and the wing-coverts of a more yellow shade, serving at once to 

 distinguish it from the true 5. a. albescens. The greatest difference is 

 seen in the under wing-coverts, which in this form are cream-color, while 

 in 5". a. albescens they are buff. The under tail-coverts are also paler. 

 The measurements are as follows. 



45. Icterus icterus (Linn.). Troupial. — Abundant in the coast region, 

 common about El Valle, but rare farther up the mountain. 



' Nesiotis, from vco-iwris, an islander. 



